Trivial nit fixes (#12285)

diff --git a/packages/flutter_tools/lib/src/base/terminal.dart b/packages/flutter_tools/lib/src/base/terminal.dart
index aace3b0..3ec32e9f 100644
--- a/packages/flutter_tools/lib/src/base/terminal.dart
+++ b/packages/flutter_tools/lib/src/base/terminal.dart

@@ -118,11 +118,7 @@
     }
     String choice;
     singleCharMode = true;
-    while(
-      isEmpty(choice)
-      || choice.length != 1
-      || !acceptedCharacters.contains(choice)
-     ) {
+    while (isEmpty(choice) || choice.length != 1 || !acceptedCharacters.contains(choice)) {
       if (isNotEmpty(prompt)) {
         printStatus(prompt, emphasis: true, newline: false);
         if (displayAcceptedCharacters)

diff --git a/packages/flutter_tools/lib/src/commands/analyze_base.dart b/packages/flutter_tools/lib/src/commands/analyze_base.dart
index fc8c8b5..daebe97 100644
--- a/packages/flutter_tools/lib/src/commands/analyze_base.dart
+++ b/packages/flutter_tools/lib/src/commands/analyze_base.dart

@@ -53,8 +53,8 @@
   bool get isBenchmarking => argResults['benchmark'];
 }
 
-/// Return `true` if [fileList] contains a path that resides inside the Flutter repository.
-/// If [fileList] is empty, then return `true` if the current directory resides inside the Flutter repository.
+/// Return true if [fileList] contains a path that resides inside the Flutter repository.
+/// If [fileList] is empty, then return true if the current directory resides inside the Flutter repository.
 bool inRepo(List<String> fileList) {
   if (fileList == null || fileList.isEmpty)
     fileList = <String>[fs.path.current];

diff --git a/packages/flutter_tools/lib/src/commands/create.dart b/packages/flutter_tools/lib/src/commands/create.dart
index 6e31fa9..432b971 100644
--- a/packages/flutter_tools/lib/src/commands/create.dart
+++ b/packages/flutter_tools/lib/src/commands/create.dart

@@ -383,7 +383,7 @@
   final FileSystemEntityType type = fs.typeSync(dirPath);
 
   if (type != FileSystemEntityType.NOT_FOUND) {
-    switch(type) {
+    switch (type) {
       case FileSystemEntityType.FILE:
         // Do not overwrite files.
         return "Invalid project name: '$dirPath' - file exists.";

diff --git a/packages/flutter_tools/lib/src/compile.dart b/packages/flutter_tools/lib/src/compile.dart
index 1052805..961c5a6 100644
--- a/packages/flutter_tools/lib/src/compile.dart
+++ b/packages/flutter_tools/lib/src/compile.dart

@@ -109,7 +109,7 @@
   /// Otherwise, [mainPath] is ignored, but [invalidatedFiles] is recompiled
   /// into new binary.
   /// Binary file name is returned if compilation was successful, otherwise
-  /// `null` is returned.
+  /// null is returned.
   Future<String> recompile(String mainPath, List<String> invalidatedFiles) async {
     stdoutHandler.reset();
 

diff --git a/packages/flutter_tools/lib/src/devfs.dart b/packages/flutter_tools/lib/src/devfs.dart
index 938d5de..65a5b71 100644
--- a/packages/flutter_tools/lib/src/devfs.dart
+++ b/packages/flutter_tools/lib/src/devfs.dart

@@ -30,7 +30,7 @@
 abstract class DevFSContent {
   bool _exists = true;
 
-  /// Return `true` if this is the first time this method is called
+  /// Return true if this is the first time this method is called
   /// or if the entry has been modified since this method was last called.
   bool get isModified;
 
@@ -125,7 +125,7 @@
     _isModified = true;
   }
 
-  /// Return `true` only once so that the content is written to the device only once.
+  /// Return true only once so that the content is written to the device only once.
   @override
   bool get isModified {
     final bool modified = _isModified;

diff --git a/packages/flutter_tools/lib/src/ios/simulators.dart b/packages/flutter_tools/lib/src/ios/simulators.dart
index 75b5ccb..3376d75 100644
--- a/packages/flutter_tools/lib/src/ios/simulators.dart
+++ b/packages/flutter_tools/lib/src/ios/simulators.dart

@@ -668,12 +668,12 @@
   final List<int> v2Fragments = v2.split('.').map(int.parse).toList();
 
   int i = 0;
-  while(i < v1Fragments.length && i < v2Fragments.length) {
+  while (i < v1Fragments.length && i < v2Fragments.length) {
     final int v1Fragment = v1Fragments[i];
     final int v2Fragment = v2Fragments[i];
     if (v1Fragment != v2Fragment)
       return v1Fragment.compareTo(v2Fragment);
-    i++;
+    i += 1;
   }
   return v1Fragments.length.compareTo(v2Fragments.length);
 }

diff --git a/packages/flutter_tools/lib/src/version.dart b/packages/flutter_tools/lib/src/version.dart
index 9cc6a77..8d74a29 100644
--- a/packages/flutter_tools/lib/src/version.dart
+++ b/packages/flutter_tools/lib/src/version.dart

@@ -395,7 +395,7 @@
 
 /// Runs [command] and returns the standard output as a string.
 ///
-/// If [lenient] is `true` and the command fails, returns an empty string.
+/// If [lenient] is true and the command fails, returns an empty string.
 /// Otherwise, throws a [ToolExit] exception.
 String _runSync(List<String> command, {bool lenient: true}) {
   final ProcessResult results = processManager.runSync(command, workingDirectory: Cache.flutterRoot);